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珊瑚礁砂物理力学性质与硅质砂有明显的区别,而现有的地基强度与变形参数经验关系均是基于硅质砂建立的,不适用于珊瑚礁砂地基,无法在珊瑚岛礁建设过程中直接使用。依托海南某工程项目,在珊瑚礁砂地基上进行了大量重型圆锥动力触探、平板载荷和标准贯入试验,基于原位测试数据,探讨建立适用于海南某岛礁珊瑚砂的重型圆锥动力触探击数(N_(63.5))与地基变形模量(E_0)、标准贯入试验锤击数(N)的经验关系,为今后海洋岛礁建设的地基处理设计与验收提供参考。
The physical and mechanical properties of coral reef sand are obviously different from those of siliceous sands. However, the existing empirical relationship between subgrade strength and deformation parameters is based on siliceous sands, which is not suitable for coral reef sand foundation and can not be directly used in coral reef construction . Relying on an engineering project in Hainan Province, a large number of heavy cone dynamic penetration tests, flat load tests and standard penetration tests were carried out on coral reef sand bases. Based on the in situ test data, a heavy cone power cone probe The empirical relationship between the number of hits (N 63.5), the modulus of foundation deformation (E 0) and the number of standard penetration tests (N) provides a reference for the design and acceptance of the foundation treatment of marine reefs in the future.